Difference between revisions of "March 6, 2005"
| (9 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
=A Single Twin= | =A Single Twin= | ||
| + | <!-- Start of content --> | ||
<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
<tr> | <tr> | ||
| − | |||
</tr> | </tr> | ||
</table> | </table> | ||
<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
<tr><td colspan="2" valign="top"><div align="center"> | <tr><td colspan="2" valign="top"><div align="center"> | ||
| − | + | <!-- Mouse style 1 --> | |
| − | + | {{HoverImage|LPOD-2005-03-06.jpeg|LPOD-2005-03-06b.jpeg}} | |
| − | |||
| − | |||
</div></td> | </div></td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
<table width="80%" border="0" align="center" cellpadding="8"> | <table width="80%" border="0" align="center" cellpadding="8"> | ||
| − | <tr><td><div align="center" class="main_sm">Image Credit: [mailto:bert@ipapilot.org Vincent Bert]</p> | + | <tr><td><div align="center" class="main_sm"><p>Image Credit: [mailto:bert@ipapilot.org Vincent Bert]</p> |
</div></td> | </div></td> | ||
</tr> | </tr> | ||
| Line 24: | Line 22: | ||
<p align="center"><b>A Single Twin</b></p> | <p align="center"><b>A Single Twin</b></p> | ||
<p align="left">Did you know that the diameter of Geminus is one kilometer larger than Tycho? 86 vs 85 km. Tycho is one of the best studied lunar craters because it is relatively large, but more importantly it is young (about 100 m.y.) and has the largest ray system on the Moon. Geminus is also young, but no radiometric date is available and its lack of a ray system means that it is Erastothenian in stratigraphic age – probably more than 2 b.y. old. Geminus is neglected, but Vince’s excellent image with his trusty orange C8 reveals Geminus to be a respectable complex crater with a sharp rim crest, originally terraced walls that are now muted, and a few low central peaks. Nearby are some other noteworthy sights. Immediately below Geminus is Burckhardt (see mouseover) with its ears of overlapped craters. And notice that south and east of Geminus there is slight scarp with the terrain to the south being slightly lower and smoother. The scarp is the 1075 km diameter Geminus rim of the Crisium impact basin, and the smooth terrain probably is old basalt that has lost its dark hue. Finally, look at the interesting floor of Messala – just to the left of the "M" on the mouseover image is a slight mound. A second, steeper mound appears NE of Bernoulli and SE of Messala – I haven’t looked at this feature on other images to see what it is. I am impressed with the features of interest that show up on this image from one of the early modern amateur telescopes! </p> | <p align="left">Did you know that the diameter of Geminus is one kilometer larger than Tycho? 86 vs 85 km. Tycho is one of the best studied lunar craters because it is relatively large, but more importantly it is young (about 100 m.y.) and has the largest ray system on the Moon. Geminus is also young, but no radiometric date is available and its lack of a ray system means that it is Erastothenian in stratigraphic age – probably more than 2 b.y. old. Geminus is neglected, but Vince’s excellent image with his trusty orange C8 reveals Geminus to be a respectable complex crater with a sharp rim crest, originally terraced walls that are now muted, and a few low central peaks. Nearby are some other noteworthy sights. Immediately below Geminus is Burckhardt (see mouseover) with its ears of overlapped craters. And notice that south and east of Geminus there is slight scarp with the terrain to the south being slightly lower and smoother. The scarp is the 1075 km diameter Geminus rim of the Crisium impact basin, and the smooth terrain probably is old basalt that has lost its dark hue. Finally, look at the interesting floor of Messala – just to the left of the "M" on the mouseover image is a slight mound. A second, steeper mound appears NE of Bernoulli and SE of Messala – I haven’t looked at this feature on other images to see what it is. I am impressed with the features of interest that show up on this image from one of the early modern amateur telescopes! </p> | ||
| − | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | + | <blockquote> |
| − | <p align="left" | + | <p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</p></blockquote> |
| + | <p align="left"><b>Technical Details:</b><br> | ||
16 day old moon. Orange Tube C8 + 2X Barlow + Toucam Pro; 280 frames from 600. Imaged from my apartment balcony, Solana Beach, CA</p> | 16 day old moon. Orange Tube C8 + 2X Barlow + Toucam Pro; 280 frames from 600. Imaged from my apartment balcony, Solana Beach, CA</p> | ||
<p><b>Related Links:</b><br> | <p><b>Related Links:</b><br> | ||
Rukl Plate 16 | Rukl Plate 16 | ||
| − | <p | + | </p> |
| + | <p><b>Yesterday's LPOD:</b> [[March 5, 2005|Before and After: Antares and the Moon]] </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> [[March 7, 2005|One Good Occultation Deserves Another]] </p> | ||
</tr> | </tr> | ||
</table> | </table> | ||
| Line 40: | Line 41: | ||
<p align="center" class="main_titles"><b>Author & Editor:</b><br> | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | ||
[mailto:tychocrater@yahoo.com Charles A. Wood]</p> | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | ||
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
| − | + | <!-- Cleanup of credits --> | |
| − | < | + | <!-- Cleanup of credits --> |
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
</td></tr> | </td></tr> | ||
</table> | </table> | ||
<p> </p> | <p> </p> | ||
| − | ---- | + | <!-- End of content --> |
| − | + | {{wiki/ArticleFooter}} | |
| − | |||
Latest revision as of 15:12, 15 March 2015
A Single Twin
|
Image Credit: Vincent Bert |
|
A Single Twin Did you know that the diameter of Geminus is one kilometer larger than Tycho? 86 vs 85 km. Tycho is one of the best studied lunar craters because it is relatively large, but more importantly it is young (about 100 m.y.) and has the largest ray system on the Moon. Geminus is also young, but no radiometric date is available and its lack of a ray system means that it is Erastothenian in stratigraphic age – probably more than 2 b.y. old. Geminus is neglected, but Vince’s excellent image with his trusty orange C8 reveals Geminus to be a respectable complex crater with a sharp rim crest, originally terraced walls that are now muted, and a few low central peaks. Nearby are some other noteworthy sights. Immediately below Geminus is Burckhardt (see mouseover) with its ears of overlapped craters. And notice that south and east of Geminus there is slight scarp with the terrain to the south being slightly lower and smoother. The scarp is the 1075 km diameter Geminus rim of the Crisium impact basin, and the smooth terrain probably is old basalt that has lost its dark hue. Finally, look at the interesting floor of Messala – just to the left of the "M" on the mouseover image is a slight mound. A second, steeper mound appears NE of Bernoulli and SE of Messala – I haven’t looked at this feature on other images to see what it is. I am impressed with the features of interest that show up on this image from one of the early modern amateur telescopes! Technical Details: Related Links: Yesterday's LPOD: Before and After: Antares and the Moon Tomorrow's LPOD: One Good Occultation Deserves Another |
|
Author & Editor: |
COMMENTS?
Register, Log in, and join in the comments.
